For human groups to grow from small, intimate communities to the huge interconnected societies we know now, people needed to be willing to cooperate with strangers. Religion might have played a big role.

It’s all just data – how can it be prejudiced?
Trey GuinnAugust 13, 2015

“Make sure you play fairly,” often say parents to their kids. In fact, children do not need encouragement to be fair, it is a unique feature of human social life, which emerges in childhood. When given…